X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvppinfra%2Ftime.h;h=39bc188ebe587075671e93b03494c06966ec8641;hb=ed2fe93fd1ee7bfdad54f323946d76da91aa3398;hp=3b89cf789fedeb2539e66c3521bef0c9bc716d85;hpb=7cd468a3d7dee7d6c92f69a0bb7061ae208ec727;p=vpp.git

diff --git a/src/vppinfra/time.h b/src/vppinfra/time.h
index 3b89cf789fe..39bc188ebe5 100644
--- a/src/vppinfra/time.h
+++ b/src/vppinfra/time.h
@@ -114,6 +114,16 @@ clib_cpu_time_now (void)
   return (u64) lo + ((u64) hi2 << (u64) 32);
 }
 
+#elif defined (__aarch64__)
+always_inline u64
+clib_cpu_time_now (void)
+{
+  u64 vct;
+  /* User access to cntvct_el0 is enabled in Linux kernel since 3.12. */
+  asm volatile ("mrs %0, cntvct_el0":"=r" (vct));
+  return vct;
+}
+
 #elif defined (__arm__)
 #if defined(__ARM_ARCH_8A__)
 always_inline u64
@@ -164,18 +174,6 @@ clib_cpu_time_now (void)
   return ((u64) h << 32) | l;
 }
 
-#elif defined (__aarch64__)
-always_inline u64
-clib_cpu_time_now (void)
-{
-  u64 tsc;
-
-  /* Works on Cavium ThunderX. Other platforms: YMMV */
-  asm volatile ("mrs %0, cntvct_el0":"=r" (tsc));
-
-  return tsc;
-}
-
 #else
 #error "don't know how to read CPU time stamp"
 
@@ -198,6 +196,9 @@ clib_time_now_internal (clib_time_t * c, u64 n)
   return t * c->seconds_per_clock;
 }
 
+/* Maximum f64 value as max clib_time */
+#define CLIB_TIME_MAX (1.7976931348623157e+308)
+
 always_inline f64
 clib_time_now (clib_time_t * c)
 {
@@ -242,6 +243,15 @@ unix_time_now_nsec (void)
   return 1e9 * ts.tv_sec + ts.tv_nsec;
 }
 
+always_inline void
+unix_time_now_nsec_fraction (u32 * sec, u32 * nsec)
+{
+  struct timespec ts;
+  syscall (SYS_clock_gettime, CLOCK_REALTIME, &ts);
+  *sec = ts.tv_sec;
+  *nsec = ts.tv_nsec;
+}
+
 always_inline f64
 unix_usage_now (void)
 {
@@ -254,10 +264,12 @@ unix_usage_now (void)
 always_inline void
 unix_sleep (f64 dt)
 {
-  struct timespec t;
-  t.tv_sec = dt;
-  t.tv_nsec = 1e9 * dt;
-  nanosleep (&t, 0);
+  struct timespec ts, tsrem;
+  ts.tv_sec = dt;
+  ts.tv_nsec = 1e9 * (dt - (f64) ts.tv_sec);
+
+  while (nanosleep (&ts, &tsrem) < 0)
+    ts = tsrem;
 }
 
 #else /* ! CLIB_UNIX */
@@ -274,6 +286,11 @@ unix_time_now_nsec (void)
   return 0;
 }
 
+always_inline void
+unix_time_now_nsec_fraction (u32 * sec, u32 * nsec)
+{
+}
+
 always_inline f64
 unix_usage_now (void)
 {